Torek's quad stuff from 4.4.
This commit is contained in:
parent
dd964a65fd
commit
49e0bc5446
11
lib/libc/quad/Makefile.inc
Normal file
11
lib/libc/quad/Makefile.inc
Normal file
@ -0,0 +1,11 @@
|
||||
# from: @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
|
||||
# $Id: Makefile.inc,v 1.1 1993/09/16 06:05:46 mycroft Exp $
|
||||
|
||||
# Quad support
|
||||
SRCS+= adddi3.c anddi3.c ashldi3.c ashrdi3.c cmpdi2.c divdi3.c fixdfdi.c \
|
||||
fixsfdi.c fixunsdfdi.c fixunssfdi.c floatdidf.c floatdisf.c \
|
||||
floatunsdidf.c iordi3.c lshldi3.c lshrdi3.c moddi3.c muldi3.c \
|
||||
negdi2.c notdi2.c qdivrem.c subdi3.c ucmpdi2.c udivdi3.c umoddi3.c \
|
||||
xordi3.c
|
||||
|
||||
.PATH: ${.CURDIR}/${MACHINE}/quad ${.CURDIR}/quad
|
61
lib/libc/quad/adddi3.c
Normal file
61
lib/libc/quad/adddi3.c
Normal file
@ -0,0 +1,61 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)adddi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: adddi3.c,v 1.1 1993/09/16 06:05:47 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Add two quads. This is trivial since a one-bit carry from a single
|
||||
* u_long addition x+y occurs if and only if the sum x+y is less than
|
||||
* either x or y (the choice to compare with x or y is arbitrary).
|
||||
*/
|
||||
quad_t
|
||||
__adddi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb, sum;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
sum.ul[L] = aa.ul[L] + bb.ul[L];
|
||||
sum.ul[H] = aa.ul[H] + bb.ul[H] + (sum.ul[L] < bb.ul[L]);
|
||||
return (sum.q);
|
||||
}
|
59
lib/libc/quad/anddi3.c
Normal file
59
lib/libc/quad/anddi3.c
Normal file
@ -0,0 +1,59 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)anddi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: anddi3.c,v 1.1 1993/09/16 06:05:48 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Return a & b, in quad.
|
||||
*/
|
||||
quad_t
|
||||
__anddi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
aa.ul[0] &= bb.ul[0];
|
||||
aa.ul[1] &= bb.ul[1];
|
||||
return (aa.q);
|
||||
}
|
67
lib/libc/quad/ashldi3.c
Normal file
67
lib/libc/quad/ashldi3.c
Normal file
@ -0,0 +1,67 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)ashldi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: ashldi3.c,v 1.1 1993/09/16 06:05:49 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Shift a (signed) quad value left (arithmetic shift left).
|
||||
* This is the same as logical shift left!
|
||||
*/
|
||||
quad_t
|
||||
__ashldi3(a, shift)
|
||||
quad_t a;
|
||||
qshift_t shift;
|
||||
{
|
||||
union uu aa;
|
||||
|
||||
aa.q = a;
|
||||
if (shift >= LONG_BITS) {
|
||||
aa.ul[H] = shift >= QUAD_BITS ? 0 :
|
||||
aa.ul[L] << (shift - LONG_BITS);
|
||||
aa.ul[L] = 0;
|
||||
} else if (shift > 0) {
|
||||
aa.ul[H] = (aa.ul[H] << shift) |
|
||||
(aa.ul[L] >> (LONG_BITS - shift));
|
||||
aa.ul[L] <<= shift;
|
||||
}
|
||||
return (aa.q);
|
||||
}
|
76
lib/libc/quad/ashrdi3.c
Normal file
76
lib/libc/quad/ashrdi3.c
Normal file
@ -0,0 +1,76 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)ashrdi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: ashrdi3.c,v 1.1 1993/09/16 06:05:50 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Shift a (signed) quad value right (arithmetic shift right).
|
||||
*/
|
||||
quad_t
|
||||
__ashrdi3(a, shift)
|
||||
quad_t a;
|
||||
qshift_t shift;
|
||||
{
|
||||
union uu aa;
|
||||
|
||||
aa.q = a;
|
||||
if (shift >= LONG_BITS) {
|
||||
long s;
|
||||
|
||||
/*
|
||||
* Smear bits rightward using the machine's right-shift
|
||||
* method, whether that is sign extension or zero fill,
|
||||
* to get the `sign word' s. Note that shifting by
|
||||
* LONG_BITS is undefined, so we shift (LONG_BITS-1),
|
||||
* then 1 more, to get our answer.
|
||||
*/
|
||||
s = (aa.sl[H] >> (LONG_BITS - 1)) >> 1;
|
||||
aa.ul[L] = shift >= QUAD_BITS ? s :
|
||||
aa.sl[H] >> (shift - LONG_BITS);
|
||||
aa.ul[H] = s;
|
||||
} else if (shift > 0) {
|
||||
aa.ul[L] = (aa.ul[L] >> shift) |
|
||||
(aa.ul[H] << (LONG_BITS - shift));
|
||||
aa.sl[H] >>= shift;
|
||||
}
|
||||
return (aa.q);
|
||||
}
|
60
lib/libc/quad/cmpdi2.c
Normal file
60
lib/libc/quad/cmpdi2.c
Normal file
@ -0,0 +1,60 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)cmpdi2.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: cmpdi2.c,v 1.1 1993/09/16 06:05:51 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Return 0, 1, or 2 as a <, =, > b respectively.
|
||||
* Both a and b are considered signed---which means only the high word is
|
||||
* signed.
|
||||
*/
|
||||
int
|
||||
__cmpdi2(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
return (aa.sl[H] < bb.sl[H] ? 0 : aa.sl[H] > bb.sl[H] ? 2 :
|
||||
aa.ul[L] < bb.ul[L] ? 0 : aa.ul[L] > bb.ul[L] ? 2 : 1);
|
||||
}
|
66
lib/libc/quad/divdi3.c
Normal file
66
lib/libc/quad/divdi3.c
Normal file
@ -0,0 +1,66 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)divdi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: divdi3.c,v 1.1 1993/09/16 06:05:52 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Divide two signed quads.
|
||||
* ??? if -1/2 should produce -1 on this machine, this code is wrong
|
||||
*/
|
||||
quad_t
|
||||
__divdi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
u_quad_t ua, ub, uq;
|
||||
int neg;
|
||||
|
||||
if (a < 0)
|
||||
ua = -(u_quad_t)a, neg = 1;
|
||||
else
|
||||
ua = a, neg = 0;
|
||||
if (b < 0)
|
||||
ub = -(u_quad_t)b, neg ^= 1;
|
||||
else
|
||||
ub = b;
|
||||
uq = __qdivrem(ua, ub, (u_quad_t *)0);
|
||||
return (neg ? -uq : uq);
|
||||
}
|
63
lib/libc/quad/fixdfdi.c
Normal file
63
lib/libc/quad/fixdfdi.c
Normal file
@ -0,0 +1,63 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)fixdfdi.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: fixdfdi.c,v 1.1 1993/09/16 06:05:53 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Convert double to (signed) quad.
|
||||
* We clamp anything that is out of range.
|
||||
*/
|
||||
quad_t
|
||||
__fixdfdi(x)
|
||||
double x;
|
||||
{
|
||||
if (x < 0)
|
||||
if (x <= QUAD_MIN)
|
||||
return (QUAD_MIN);
|
||||
else
|
||||
return ((quad_t)-(u_quad_t)-x);
|
||||
else
|
||||
if (x >= QUAD_MAX)
|
||||
return (QUAD_MAX);
|
||||
else
|
||||
return ((quad_t)(u_quad_t)x);
|
||||
}
|
64
lib/libc/quad/fixsfdi.c
Normal file
64
lib/libc/quad/fixsfdi.c
Normal file
@ -0,0 +1,64 @@
|
||||
/*-
|
||||
* Copyright (c) 1992 The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)fixsfdi.c 5.1 (Berkeley) 7/7/92";*/
|
||||
static char *rcsid = "$Id: fixsfdi.c,v 1.1 1993/09/16 06:05:54 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Convert float to (signed) quad.
|
||||
* We clamp anything that is out of range.
|
||||
*
|
||||
* N.B.: must use new ANSI syntax (sorry).
|
||||
*/
|
||||
long long
|
||||
__fixsfdi(float x)
|
||||
{
|
||||
if (x < 0)
|
||||
if (x <= QUAD_MIN)
|
||||
return (QUAD_MIN);
|
||||
else
|
||||
return ((quad_t)-(u_quad_t)-x);
|
||||
else
|
||||
if (x >= QUAD_MAX)
|
||||
return (QUAD_MAX);
|
||||
else
|
||||
return ((quad_t)(u_quad_t)x);
|
||||
}
|
97
lib/libc/quad/fixunsdfdi.c
Normal file
97
lib/libc/quad/fixunsdfdi.c
Normal file
@ -0,0 +1,97 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)fixunsdfdi.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: fixunsdfdi.c,v 1.1 1993/09/16 06:05:55 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
#define ONE_FOURTH (1 << (LONG_BITS - 2))
|
||||
#define ONE_HALF (ONE_FOURTH * 2.0)
|
||||
#define ONE (ONE_FOURTH * 4.0)
|
||||
|
||||
/*
|
||||
* Convert double to (unsigned) quad.
|
||||
* Not sure what to do with negative numbers---for now, anything out
|
||||
* of range becomes UQUAD_MAX.
|
||||
*/
|
||||
u_quad_t
|
||||
__fixunsdfdi(x)
|
||||
double x;
|
||||
{
|
||||
double toppart;
|
||||
union uu t;
|
||||
|
||||
if (x < 0)
|
||||
return (UQUAD_MAX); /* ??? should be 0? ERANGE??? */
|
||||
#ifdef notdef /* this falls afoul of a GCC bug */
|
||||
if (x >= UQUAD_MAX)
|
||||
return (UQUAD_MAX);
|
||||
#else /* so we wire in 2^64-1 instead */
|
||||
if (x >= 18446744073709551615.0) /* XXX */
|
||||
return (UQUAD_MAX);
|
||||
#endif
|
||||
/*
|
||||
* Get the upper part of the result. Note that the divide
|
||||
* may round up; we want to avoid this if possible, so we
|
||||
* subtract `1/2' first.
|
||||
*/
|
||||
toppart = (x - ONE_HALF) / ONE;
|
||||
/*
|
||||
* Now build a u_quad_t out of the top part. The difference
|
||||
* between x and this is the bottom part (this may introduce
|
||||
* a few fuzzy bits, but what the heck). With any luck this
|
||||
* difference will be nonnegative: x should wind up in the
|
||||
* range [0..ULONG_MAX]. For paranoia, we assume [LONG_MIN..
|
||||
* 2*ULONG_MAX] instead.
|
||||
*/
|
||||
t.ul[H] = (unsigned long)toppart;
|
||||
t.ul[L] = 0;
|
||||
x -= (double)t.uq;
|
||||
if (x < 0) {
|
||||
t.ul[H]--;
|
||||
x += ULONG_MAX;
|
||||
}
|
||||
if (x > ULONG_MAX) {
|
||||
t.ul[H]++;
|
||||
x -= ULONG_MAX;
|
||||
}
|
||||
t.ul[L] = (u_long)x;
|
||||
return (t.uq);
|
||||
}
|
101
lib/libc/quad/fixunssfdi.c
Normal file
101
lib/libc/quad/fixunssfdi.c
Normal file
@ -0,0 +1,101 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)fixunssfdi.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: fixunssfdi.c,v 1.1 1993/09/16 06:05:57 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
#define ONE_FOURTH (1 << (LONG_BITS - 2))
|
||||
#define ONE_HALF (ONE_FOURTH * 2.0)
|
||||
#define ONE (ONE_FOURTH * 4.0)
|
||||
|
||||
/*
|
||||
* Convert float to (unsigned) quad. We do most of our work in double,
|
||||
* out of sheer paranoia.
|
||||
*
|
||||
* Not sure what to do with negative numbers---for now, anything out
|
||||
* of range becomes UQUAD_MAX.
|
||||
*
|
||||
* N.B.: must use new ANSI syntax (sorry).
|
||||
*/
|
||||
u_quad_t
|
||||
__fixunssfdi(float f)
|
||||
{
|
||||
double x, toppart;
|
||||
union uu t;
|
||||
|
||||
if (f < 0)
|
||||
return (UQUAD_MAX); /* ??? should be 0? ERANGE??? */
|
||||
#ifdef notdef /* this falls afoul of a GCC bug */
|
||||
if (f >= UQUAD_MAX)
|
||||
return (UQUAD_MAX);
|
||||
#else /* so we wire in 2^64-1 instead */
|
||||
if (f >= 18446744073709551615.0) /* XXX */
|
||||
return (UQUAD_MAX);
|
||||
#endif
|
||||
x = f;
|
||||
/*
|
||||
* Get the upper part of the result. Note that the divide
|
||||
* may round up; we want to avoid this if possible, so we
|
||||
* subtract `1/2' first.
|
||||
*/
|
||||
toppart = (x - ONE_HALF) / ONE;
|
||||
/*
|
||||
* Now build a u_quad_t out of the top part. The difference
|
||||
* between x and this is the bottom part (this may introduce
|
||||
* a few fuzzy bits, but what the heck). With any luck this
|
||||
* difference will be nonnegative: x should wind up in the
|
||||
* range [0..ULONG_MAX]. For paranoia, we assume [LONG_MIN..
|
||||
* 2*ULONG_MAX] instead.
|
||||
*/
|
||||
t.ul[H] = (unsigned long)toppart;
|
||||
t.ul[L] = 0;
|
||||
x -= (double)t.uq;
|
||||
if (x < 0) {
|
||||
t.ul[H]--;
|
||||
x += ULONG_MAX;
|
||||
}
|
||||
if (x > ULONG_MAX) {
|
||||
t.ul[H]++;
|
||||
x -= ULONG_MAX;
|
||||
}
|
||||
t.ul[L] = (u_long)x;
|
||||
return (t.uq);
|
||||
}
|
75
lib/libc/quad/floatdidf.c
Normal file
75
lib/libc/quad/floatdidf.c
Normal file
@ -0,0 +1,75 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)floatdidf.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: floatdidf.c,v 1.1 1993/09/16 06:05:58 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Convert (signed) quad to double.
|
||||
*/
|
||||
double
|
||||
__floatdidf(x)
|
||||
quad_t x;
|
||||
{
|
||||
double d;
|
||||
union uu u;
|
||||
int neg;
|
||||
|
||||
/*
|
||||
* Get an unsigned number first, by negating if necessary.
|
||||
*/
|
||||
if (x < 0)
|
||||
u.q = -x, neg = 1;
|
||||
else
|
||||
u.q = x, neg = 0;
|
||||
|
||||
/*
|
||||
* Now u.ul[H] has the factor of 2^32 (or whatever) and u.ul[L]
|
||||
* has the units. Ideally we could just set d, add LONG_BITS to
|
||||
* its exponent, and then add the units, but this is portable
|
||||
* code and does not know how to get at an exponent. Machine-
|
||||
* specific code may be able to do this more efficiently.
|
||||
*/
|
||||
d = (double)u.ul[H] * ((1 << (LONG_BITS - 2)) * 4.0);
|
||||
d += u.ul[L];
|
||||
|
||||
return (neg ? -d : d);
|
||||
}
|
77
lib/libc/quad/floatdisf.c
Normal file
77
lib/libc/quad/floatdisf.c
Normal file
@ -0,0 +1,77 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)floatdisf.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: floatdisf.c,v 1.1 1993/09/16 06:05:59 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Convert (signed) quad to float.
|
||||
*/
|
||||
float
|
||||
__floatdisf(x)
|
||||
quad_t x;
|
||||
{
|
||||
float f;
|
||||
union uu u;
|
||||
int neg;
|
||||
|
||||
/*
|
||||
* Get an unsigned number first, by negating if necessary.
|
||||
*/
|
||||
if (x < 0)
|
||||
u.q = -x, neg = 1;
|
||||
else
|
||||
u.q = x, neg = 0;
|
||||
|
||||
/*
|
||||
* Now u.ul[H] has the factor of 2^32 (or whatever) and u.ul[L]
|
||||
* has the units. Ideally we could just set f, add LONG_BITS to
|
||||
* its exponent, and then add the units, but this is portable
|
||||
* code and does not know how to get at an exponent. Machine-
|
||||
* specific code may be able to do this more efficiently.
|
||||
*
|
||||
* Using double here may be excessive paranoia.
|
||||
*/
|
||||
f = (double)u.ul[H] * ((1 << (LONG_BITS - 2)) * 4.0);
|
||||
f += u.ul[L];
|
||||
|
||||
return (neg ? -f : f);
|
||||
}
|
60
lib/libc/quad/floatunsdidf.c
Normal file
60
lib/libc/quad/floatunsdidf.c
Normal file
@ -0,0 +1,60 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)floatunsdidf.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: floatunsdidf.c,v 1.1 1993/09/16 06:05:59 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Convert (unsigned) quad to double.
|
||||
* This is exactly like floatdidf.c except that negatives never occur.
|
||||
*/
|
||||
double
|
||||
__floatunsdidf(x)
|
||||
u_quad_t x;
|
||||
{
|
||||
double d;
|
||||
union uu u;
|
||||
|
||||
u.uq = x;
|
||||
d = (double)u.ul[H] * ((1 << (LONG_BITS - 2)) * 4.0);
|
||||
d += u.ul[L];
|
||||
return (d);
|
||||
}
|
59
lib/libc/quad/iordi3.c
Normal file
59
lib/libc/quad/iordi3.c
Normal file
@ -0,0 +1,59 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)iordi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: iordi3.c,v 1.1 1993/09/16 06:06:00 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Return a | b, in quad.
|
||||
*/
|
||||
quad_t
|
||||
__iordi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
aa.ul[0] |= bb.ul[0];
|
||||
aa.ul[1] |= bb.ul[1];
|
||||
return (aa.q);
|
||||
}
|
67
lib/libc/quad/lshldi3.c
Normal file
67
lib/libc/quad/lshldi3.c
Normal file
@ -0,0 +1,67 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)lshldi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: lshldi3.c,v 1.1 1993/09/16 06:06:01 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Shift an (unsigned) quad value left (logical shift left).
|
||||
* This is the same as arithmetic shift left!
|
||||
*/
|
||||
quad_t
|
||||
__lshldi3(a, shift)
|
||||
quad_t a;
|
||||
qshift_t shift;
|
||||
{
|
||||
union uu aa;
|
||||
|
||||
aa.q = a;
|
||||
if (shift >= LONG_BITS) {
|
||||
aa.ul[H] = shift >= QUAD_BITS ? 0 :
|
||||
aa.ul[L] << (shift - LONG_BITS);
|
||||
aa.ul[L] = 0;
|
||||
} else if (shift > 0) {
|
||||
aa.ul[H] = (aa.ul[H] << shift) |
|
||||
(aa.ul[L] >> (LONG_BITS - shift));
|
||||
aa.ul[L] <<= shift;
|
||||
}
|
||||
return (aa.q);
|
||||
}
|
66
lib/libc/quad/lshrdi3.c
Normal file
66
lib/libc/quad/lshrdi3.c
Normal file
@ -0,0 +1,66 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)lshrdi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: lshrdi3.c,v 1.1 1993/09/16 06:06:03 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Shift an (unsigned) quad value right (logical shift right).
|
||||
*/
|
||||
quad_t
|
||||
__lshrdi3(a, shift)
|
||||
quad_t a;
|
||||
qshift_t shift;
|
||||
{
|
||||
union uu aa;
|
||||
|
||||
aa.q = a;
|
||||
if (shift >= LONG_BITS) {
|
||||
aa.ul[L] = shift >= QUAD_BITS ? 0 :
|
||||
aa.ul[H] >> (shift - LONG_BITS);
|
||||
aa.ul[H] = 0;
|
||||
} else if (shift > 0) {
|
||||
aa.ul[L] = (aa.ul[L] >> shift) |
|
||||
(aa.ul[H] << (LONG_BITS - shift));
|
||||
aa.ul[H] >>= shift;
|
||||
}
|
||||
return (aa.q);
|
||||
}
|
68
lib/libc/quad/moddi3.c
Normal file
68
lib/libc/quad/moddi3.c
Normal file
@ -0,0 +1,68 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)moddi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: moddi3.c,v 1.1 1993/09/16 06:06:04 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Return remainder after dividing two signed quads.
|
||||
*
|
||||
* XXX
|
||||
* If -1/2 should produce -1 on this machine, this code is wrong.
|
||||
*/
|
||||
quad_t
|
||||
__moddi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
u_quad_t ua, ub, ur;
|
||||
int neg;
|
||||
|
||||
if (a < 0)
|
||||
ua = -(u_quad_t)a, neg = 1;
|
||||
else
|
||||
ua = a, neg = 0;
|
||||
if (b < 0)
|
||||
ub = -(u_quad_t)b, neg ^= 1;
|
||||
else
|
||||
ub = b;
|
||||
(void)__qdivrem(ua, ub, &ur);
|
||||
return (neg ? -ur : ur);
|
||||
}
|
247
lib/libc/quad/muldi3.c
Normal file
247
lib/libc/quad/muldi3.c
Normal file
@ -0,0 +1,247 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)muldi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: muldi3.c,v 1.1 1993/09/16 06:06:05 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Multiply two quads.
|
||||
*
|
||||
* Our algorithm is based on the following. Split incoming quad values
|
||||
* u and v (where u,v >= 0) into
|
||||
*
|
||||
* u = 2^n u1 * u0 (n = number of bits in `u_long', usu. 32)
|
||||
*
|
||||
* and
|
||||
*
|
||||
* v = 2^n v1 * v0
|
||||
*
|
||||
* Then
|
||||
*
|
||||
* uv = 2^2n u1 v1 + 2^n u1 v0 + 2^n v1 u0 + u0 v0
|
||||
* = 2^2n u1 v1 + 2^n (u1 v0 + v1 u0) + u0 v0
|
||||
*
|
||||
* Now add 2^n u1 v1 to the first term and subtract it from the middle,
|
||||
* and add 2^n u0 v0 to the last term and subtract it from the middle.
|
||||
* This gives:
|
||||
*
|
||||
* uv = (2^2n + 2^n) (u1 v1) +
|
||||
* (2^n) (u1 v0 - u1 v1 + u0 v1 - u0 v0) +
|
||||
* (2^n + 1) (u0 v0)
|
||||
*
|
||||
* Factoring the middle a bit gives us:
|
||||
*
|
||||
* uv = (2^2n + 2^n) (u1 v1) + [u1v1 = high]
|
||||
* (2^n) (u1 - u0) (v0 - v1) + [(u1-u0)... = mid]
|
||||
* (2^n + 1) (u0 v0) [u0v0 = low]
|
||||
*
|
||||
* The terms (u1 v1), (u1 - u0) (v0 - v1), and (u0 v0) can all be done
|
||||
* in just half the precision of the original. (Note that either or both
|
||||
* of (u1 - u0) or (v0 - v1) may be negative.)
|
||||
*
|
||||
* This algorithm is from Knuth vol. 2 (2nd ed), section 4.3.3, p. 278.
|
||||
*
|
||||
* Since C does not give us a `long * long = quad' operator, we split
|
||||
* our input quads into two longs, then split the two longs into two
|
||||
* shorts. We can then calculate `short * short = long' in native
|
||||
* arithmetic.
|
||||
*
|
||||
* Our product should, strictly speaking, be a `long quad', with 128
|
||||
* bits, but we are going to discard the upper 64. In other words,
|
||||
* we are not interested in uv, but rather in (uv mod 2^2n). This
|
||||
* makes some of the terms above vanish, and we get:
|
||||
*
|
||||
* (2^n)(high) + (2^n)(mid) + (2^n + 1)(low)
|
||||
*
|
||||
* or
|
||||
*
|
||||
* (2^n)(high + mid + low) + low
|
||||
*
|
||||
* Furthermore, `high' and `mid' can be computed mod 2^n, as any factor
|
||||
* of 2^n in either one will also vanish. Only `low' need be computed
|
||||
* mod 2^2n, and only because of the final term above.
|
||||
*/
|
||||
static quad_t __lmulq(u_long, u_long);
|
||||
|
||||
quad_t
|
||||
__muldi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu u, v, low, prod;
|
||||
register u_long high, mid, udiff, vdiff;
|
||||
register int negall, negmid;
|
||||
#define u1 u.ul[H]
|
||||
#define u0 u.ul[L]
|
||||
#define v1 v.ul[H]
|
||||
#define v0 v.ul[L]
|
||||
|
||||
/*
|
||||
* Get u and v such that u, v >= 0. When this is finished,
|
||||
* u1, u0, v1, and v0 will be directly accessible through the
|
||||
* longword fields.
|
||||
*/
|
||||
if (a >= 0)
|
||||
u.q = a, negall = 0;
|
||||
else
|
||||
u.q = -a, negall = 1;
|
||||
if (b >= 0)
|
||||
v.q = b;
|
||||
else
|
||||
v.q = -b, negall ^= 1;
|
||||
|
||||
if (u1 == 0 && v1 == 0) {
|
||||
/*
|
||||
* An (I hope) important optimization occurs when u1 and v1
|
||||
* are both 0. This should be common since most numbers
|
||||
* are small. Here the product is just u0*v0.
|
||||
*/
|
||||
prod.q = __lmulq(u0, v0);
|
||||
} else {
|
||||
/*
|
||||
* Compute the three intermediate products, remembering
|
||||
* whether the middle term is negative. We can discard
|
||||
* any upper bits in high and mid, so we can use native
|
||||
* u_long * u_long => u_long arithmetic.
|
||||
*/
|
||||
low.q = __lmulq(u0, v0);
|
||||
|
||||
if (u1 >= u0)
|
||||
negmid = 0, udiff = u1 - u0;
|
||||
else
|
||||
negmid = 1, udiff = u0 - u1;
|
||||
if (v0 >= v1)
|
||||
vdiff = v0 - v1;
|
||||
else
|
||||
vdiff = v1 - v0, negmid ^= 1;
|
||||
mid = udiff * vdiff;
|
||||
|
||||
high = u1 * v1;
|
||||
|
||||
/*
|
||||
* Assemble the final product.
|
||||
*/
|
||||
prod.ul[H] = high + (negmid ? -mid : mid) + low.ul[L] +
|
||||
low.ul[H];
|
||||
prod.ul[L] = low.ul[L];
|
||||
}
|
||||
return (negall ? -prod.q : prod.q);
|
||||
#undef u1
|
||||
#undef u0
|
||||
#undef v1
|
||||
#undef v0
|
||||
}
|
||||
|
||||
/*
|
||||
* Multiply two 2N-bit longs to produce a 4N-bit quad, where N is half
|
||||
* the number of bits in a long (whatever that is---the code below
|
||||
* does not care as long as quad.h does its part of the bargain---but
|
||||
* typically N==16).
|
||||
*
|
||||
* We use the same algorithm from Knuth, but this time the modulo refinement
|
||||
* does not apply. On the other hand, since N is half the size of a long,
|
||||
* we can get away with native multiplication---none of our input terms
|
||||
* exceeds (ULONG_MAX >> 1).
|
||||
*
|
||||
* Note that, for u_long l, the quad-precision result
|
||||
*
|
||||
* l << N
|
||||
*
|
||||
* splits into high and low longs as HHALF(l) and LHUP(l) respectively.
|
||||
*/
|
||||
static quad_t
|
||||
__lmulq(u_long u, u_long v)
|
||||
{
|
||||
u_long u1, u0, v1, v0, udiff, vdiff, high, mid, low;
|
||||
u_long prodh, prodl, was;
|
||||
union uu prod;
|
||||
int neg;
|
||||
|
||||
u1 = HHALF(u);
|
||||
u0 = LHALF(u);
|
||||
v1 = HHALF(v);
|
||||
v0 = LHALF(v);
|
||||
|
||||
low = u0 * v0;
|
||||
|
||||
/* This is the same small-number optimization as before. */
|
||||
if (u1 == 0 && v1 == 0)
|
||||
return (low);
|
||||
|
||||
if (u1 >= u0)
|
||||
udiff = u1 - u0, neg = 0;
|
||||
else
|
||||
udiff = u0 - u1, neg = 1;
|
||||
if (v0 >= v1)
|
||||
vdiff = v0 - v1;
|
||||
else
|
||||
vdiff = v1 - v0, neg ^= 1;
|
||||
mid = udiff * vdiff;
|
||||
|
||||
high = u1 * v1;
|
||||
|
||||
/* prod = (high << 2N) + (high << N); */
|
||||
prodh = high + HHALF(high);
|
||||
prodl = LHUP(high);
|
||||
|
||||
/* if (neg) prod -= mid << N; else prod += mid << N; */
|
||||
if (neg) {
|
||||
was = prodl;
|
||||
prodl -= LHUP(mid);
|
||||
prodh -= HHALF(mid) + (prodl > was);
|
||||
} else {
|
||||
was = prodl;
|
||||
prodl += LHUP(mid);
|
||||
prodh += HHALF(mid) + (prodl < was);
|
||||
}
|
||||
|
||||
/* prod += low << N */
|
||||
was = prodl;
|
||||
prodl += LHUP(low);
|
||||
prodh += HHALF(low) + (prodl < was);
|
||||
/* ... + low; */
|
||||
if ((prodl += low) < low)
|
||||
prodh++;
|
||||
|
||||
/* return 4N-bit product */
|
||||
prod.ul[H] = prodh;
|
||||
prod.ul[L] = prodl;
|
||||
return (prod.q);
|
||||
}
|
58
lib/libc/quad/negdi2.c
Normal file
58
lib/libc/quad/negdi2.c
Normal file
@ -0,0 +1,58 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)negdi2.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: negdi2.c,v 1.1 1993/09/16 06:06:06 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Return -a (or, equivalently, 0 - a), in quad. See subdi3.c.
|
||||
*/
|
||||
quad_t
|
||||
__negdi2(a)
|
||||
quad_t a;
|
||||
{
|
||||
union uu aa, res;
|
||||
|
||||
aa.q = a;
|
||||
res.ul[L] = -aa.ul[L];
|
||||
res.ul[H] = -aa.ul[H] - (res.ul[L] > 0);
|
||||
return (res.q);
|
||||
}
|
59
lib/libc/quad/notdi2.c
Normal file
59
lib/libc/quad/notdi2.c
Normal file
@ -0,0 +1,59 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)notdi2.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: notdi2.c,v 1.1 1993/09/16 06:06:06 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Return ~a. For some reason gcc calls this `one's complement' rather
|
||||
* than `not'.
|
||||
*/
|
||||
quad_t
|
||||
__one_cmpldi2(a)
|
||||
quad_t a;
|
||||
{
|
||||
union uu aa;
|
||||
|
||||
aa.q = a;
|
||||
aa.ul[0] = ~aa.ul[0];
|
||||
aa.ul[1] = ~aa.ul[1];
|
||||
return (aa.q);
|
||||
}
|
280
lib/libc/quad/qdivrem.c
Normal file
280
lib/libc/quad/qdivrem.c
Normal file
@ -0,0 +1,280 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)qdivrem.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: qdivrem.c,v 1.1 1993/09/16 06:06:07 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
/*
|
||||
* Multiprecision divide. This algorithm is from Knuth vol. 2 (2nd ed),
|
||||
* section 4.3.1, pp. 257--259.
|
||||
*/
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
#define B (1 << HALF_BITS) /* digit base */
|
||||
|
||||
/* Combine two `digits' to make a single two-digit number. */
|
||||
#define COMBINE(a, b) (((u_long)(a) << HALF_BITS) | (b))
|
||||
|
||||
/* select a type for digits in base B: use unsigned short if they fit */
|
||||
#if ULONG_MAX == 0xffffffff && USHRT_MAX >= 0xffff
|
||||
typedef unsigned short digit;
|
||||
#else
|
||||
typedef u_long digit;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Shift p[0]..p[len] left `sh' bits, ignoring any bits that
|
||||
* `fall out' the left (there never will be any such anyway).
|
||||
* We may assume len >= 0. NOTE THAT THIS WRITES len+1 DIGITS.
|
||||
*/
|
||||
static void
|
||||
shl(register digit *p, register int len, register int sh)
|
||||
{
|
||||
register int i;
|
||||
|
||||
for (i = 0; i < len; i++)
|
||||
p[i] = LHALF(p[i] << sh) | (p[i + 1] >> (HALF_BITS - sh));
|
||||
p[i] = LHALF(p[i] << sh);
|
||||
}
|
||||
|
||||
/*
|
||||
* __qdivrem(u, v, rem) returns u/v and, optionally, sets *rem to u%v.
|
||||
*
|
||||
* We do this in base 2-sup-HALF_BITS, so that all intermediate products
|
||||
* fit within u_long. As a consequence, the maximum length dividend and
|
||||
* divisor are 4 `digits' in this base (they are shorter if they have
|
||||
* leading zeros).
|
||||
*/
|
||||
u_quad_t
|
||||
__qdivrem(uq, vq, arq)
|
||||
u_quad_t uq, vq, *arq;
|
||||
{
|
||||
union uu tmp;
|
||||
digit *u, *v, *q;
|
||||
register digit v1, v2;
|
||||
u_long qhat, rhat, t;
|
||||
int m, n, d, j, i;
|
||||
digit uspace[5], vspace[5], qspace[5];
|
||||
|
||||
/*
|
||||
* Take care of special cases: divide by zero, and u < v.
|
||||
*/
|
||||
if (vq == 0) {
|
||||
/* divide by zero. */
|
||||
static volatile const unsigned int zero = 0;
|
||||
|
||||
tmp.ul[H] = tmp.ul[L] = 1 / zero;
|
||||
if (arq)
|
||||
*arq = uq;
|
||||
return (tmp.q);
|
||||
}
|
||||
if (uq < vq) {
|
||||
if (arq)
|
||||
*arq = uq;
|
||||
return (0);
|
||||
}
|
||||
u = &uspace[0];
|
||||
v = &vspace[0];
|
||||
q = &qspace[0];
|
||||
|
||||
/*
|
||||
* Break dividend and divisor into digits in base B, then
|
||||
* count leading zeros to determine m and n. When done, we
|
||||
* will have:
|
||||
* u = (u[1]u[2]...u[m+n]) sub B
|
||||
* v = (v[1]v[2]...v[n]) sub B
|
||||
* v[1] != 0
|
||||
* 1 < n <= 4 (if n = 1, we use a different division algorithm)
|
||||
* m >= 0 (otherwise u < v, which we already checked)
|
||||
* m + n = 4
|
||||
* and thus
|
||||
* m = 4 - n <= 2
|
||||
*/
|
||||
tmp.uq = uq;
|
||||
u[0] = 0;
|
||||
u[1] = HHALF(tmp.ul[H]);
|
||||
u[2] = LHALF(tmp.ul[H]);
|
||||
u[3] = HHALF(tmp.ul[L]);
|
||||
u[4] = LHALF(tmp.ul[L]);
|
||||
tmp.uq = vq;
|
||||
v[1] = HHALF(tmp.ul[H]);
|
||||
v[2] = LHALF(tmp.ul[H]);
|
||||
v[3] = HHALF(tmp.ul[L]);
|
||||
v[4] = LHALF(tmp.ul[L]);
|
||||
for (n = 4; v[1] == 0; v++) {
|
||||
if (--n == 1) {
|
||||
u_long rbj; /* r*B+u[j] (not root boy jim) */
|
||||
digit q1, q2, q3, q4;
|
||||
|
||||
/*
|
||||
* Change of plan, per exercise 16.
|
||||
* r = 0;
|
||||
* for j = 1..4:
|
||||
* q[j] = floor((r*B + u[j]) / v),
|
||||
* r = (r*B + u[j]) % v;
|
||||
* We unroll this completely here.
|
||||
*/
|
||||
t = v[2]; /* nonzero, by definition */
|
||||
q1 = u[1] / t;
|
||||
rbj = COMBINE(u[1] % t, u[2]);
|
||||
q2 = rbj / t;
|
||||
rbj = COMBINE(rbj % t, u[3]);
|
||||
q3 = rbj / t;
|
||||
rbj = COMBINE(rbj % t, u[4]);
|
||||
q4 = rbj / t;
|
||||
if (arq)
|
||||
*arq = rbj % t;
|
||||
tmp.ul[H] = COMBINE(q1, q2);
|
||||
tmp.ul[L] = COMBINE(q3, q4);
|
||||
return (tmp.q);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* By adjusting q once we determine m, we can guarantee that
|
||||
* there is a complete four-digit quotient at &qspace[1] when
|
||||
* we finally stop.
|
||||
*/
|
||||
for (m = 4 - n; u[1] == 0; u++)
|
||||
m--;
|
||||
for (i = 4 - m; --i >= 0;)
|
||||
q[i] = 0;
|
||||
q += 4 - m;
|
||||
|
||||
/*
|
||||
* Here we run Program D, translated from MIX to C and acquiring
|
||||
* a few minor changes.
|
||||
*
|
||||
* D1: choose multiplier 1 << d to ensure v[1] >= B/2.
|
||||
*/
|
||||
d = 0;
|
||||
for (t = v[1]; t < B / 2; t <<= 1)
|
||||
d++;
|
||||
if (d > 0) {
|
||||
shl(&u[0], m + n, d); /* u <<= d */
|
||||
shl(&v[1], n - 1, d); /* v <<= d */
|
||||
}
|
||||
/*
|
||||
* D2: j = 0.
|
||||
*/
|
||||
j = 0;
|
||||
v1 = v[1]; /* for D3 -- note that v[1..n] are constant */
|
||||
v2 = v[2]; /* for D3 */
|
||||
do {
|
||||
register digit uj0, uj1, uj2;
|
||||
|
||||
/*
|
||||
* D3: Calculate qhat (\^q, in TeX notation).
|
||||
* Let qhat = min((u[j]*B + u[j+1])/v[1], B-1), and
|
||||
* let rhat = (u[j]*B + u[j+1]) mod v[1].
|
||||
* While rhat < B and v[2]*qhat > rhat*B+u[j+2],
|
||||
* decrement qhat and increase rhat correspondingly.
|
||||
* Note that if rhat >= B, v[2]*qhat < rhat*B.
|
||||
*/
|
||||
uj0 = u[j + 0]; /* for D3 only -- note that u[j+...] change */
|
||||
uj1 = u[j + 1]; /* for D3 only */
|
||||
uj2 = u[j + 2]; /* for D3 only */
|
||||
if (uj0 == v1) {
|
||||
qhat = B;
|
||||
rhat = uj1;
|
||||
goto qhat_too_big;
|
||||
} else {
|
||||
u_long n = COMBINE(uj0, uj1);
|
||||
qhat = n / v1;
|
||||
rhat = n % v1;
|
||||
}
|
||||
while (v2 * qhat > COMBINE(rhat, uj2)) {
|
||||
qhat_too_big:
|
||||
qhat--;
|
||||
if ((rhat += v1) >= B)
|
||||
break;
|
||||
}
|
||||
/*
|
||||
* D4: Multiply and subtract.
|
||||
* The variable `t' holds any borrows across the loop.
|
||||
* We split this up so that we do not require v[0] = 0,
|
||||
* and to eliminate a final special case.
|
||||
*/
|
||||
for (t = 0, i = n; i > 0; i--) {
|
||||
t = u[i + j] - v[i] * qhat - t;
|
||||
u[i + j] = LHALF(t);
|
||||
t = (B - HHALF(t)) & (B - 1);
|
||||
}
|
||||
t = u[j] - t;
|
||||
u[j] = LHALF(t);
|
||||
/*
|
||||
* D5: test remainder.
|
||||
* There is a borrow if and only if HHALF(t) is nonzero;
|
||||
* in that (rare) case, qhat was too large (by exactly 1).
|
||||
* Fix it by adding v[1..n] to u[j..j+n].
|
||||
*/
|
||||
if (HHALF(t)) {
|
||||
qhat--;
|
||||
for (t = 0, i = n; i > 0; i--) { /* D6: add back. */
|
||||
t += u[i + j] + v[i];
|
||||
u[i + j] = LHALF(t);
|
||||
t = HHALF(t);
|
||||
}
|
||||
u[j] = LHALF(u[j] + t);
|
||||
}
|
||||
q[j] = qhat;
|
||||
} while (++j <= m); /* D7: loop on j. */
|
||||
|
||||
/*
|
||||
* If caller wants the remainder, we have to calculate it as
|
||||
* u[m..m+n] >> d (this is at most n digits and thus fits in
|
||||
* u[m+1..m+n], but we may need more source digits).
|
||||
*/
|
||||
if (arq) {
|
||||
if (d) {
|
||||
for (i = m + n; i > m; --i)
|
||||
u[i] = (u[i] >> d) |
|
||||
LHALF(u[i - 1] << (HALF_BITS - d));
|
||||
u[i] = 0;
|
||||
}
|
||||
tmp.ul[H] = COMBINE(uspace[1], uspace[2]);
|
||||
tmp.ul[L] = COMBINE(uspace[3], uspace[4]);
|
||||
*arq = tmp.q;
|
||||
}
|
||||
|
||||
tmp.ul[H] = COMBINE(qspace[1], qspace[2]);
|
||||
tmp.ul[L] = COMBINE(qspace[3], qspace[4]);
|
||||
return (tmp.q);
|
||||
}
|
111
lib/libc/quad/quad.h
Normal file
111
lib/libc/quad/quad.h
Normal file
@ -0,0 +1,111 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* from: @(#)quad.h 8.1 (Berkeley) 6/4/93
|
||||
* $Id: quad.h,v 1.1 1993/09/16 06:06:08 mycroft Exp $
|
||||
*/
|
||||
|
||||
/*
|
||||
* Quad arithmetic.
|
||||
*
|
||||
* This library makes the following assumptions:
|
||||
*
|
||||
* - The type long long (aka quad_t) exists.
|
||||
*
|
||||
* - A quad variable is exactly twice as long as `long'.
|
||||
*
|
||||
* - The machine's arithmetic is two's complement.
|
||||
*
|
||||
* This library can provide 128-bit arithmetic on a machine with 128-bit
|
||||
* quads and 64-bit longs, for instance, or 96-bit arithmetic on machines
|
||||
* with 48-bit longs.
|
||||
*/
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <limits.h>
|
||||
|
||||
/*
|
||||
* Depending on the desired operation, we view a `long long' (aka quad_t) in
|
||||
* one or more of the following formats.
|
||||
*/
|
||||
union uu {
|
||||
quad_t q; /* as a (signed) quad */
|
||||
u_quad_t uq; /* as an unsigned quad */
|
||||
long sl[2]; /* as two signed longs */
|
||||
u_long ul[2]; /* as two unsigned longs */
|
||||
};
|
||||
|
||||
/*
|
||||
* Define high and low longwords.
|
||||
*/
|
||||
#define H _QUAD_HIGHWORD
|
||||
#define L _QUAD_LOWWORD
|
||||
|
||||
/*
|
||||
* Total number of bits in a quad_t and in the pieces that make it up.
|
||||
* These are used for shifting, and also below for halfword extraction
|
||||
* and assembly.
|
||||
*/
|
||||
#define QUAD_BITS (sizeof(quad_t) * CHAR_BIT)
|
||||
#define LONG_BITS (sizeof(long) * CHAR_BIT)
|
||||
#define HALF_BITS (sizeof(long) * CHAR_BIT / 2)
|
||||
|
||||
/*
|
||||
* Extract high and low shortwords from longword, and move low shortword of
|
||||
* longword to upper half of long, i.e., produce the upper longword of
|
||||
* ((quad_t)(x) << (number_of_bits_in_long/2)). (`x' must actually be u_long.)
|
||||
*
|
||||
* These are used in the multiply code, to split a longword into upper
|
||||
* and lower halves, and to reassemble a product as a quad_t, shifted left
|
||||
* (sizeof(long)*CHAR_BIT/2).
|
||||
*/
|
||||
#define HHALF(x) ((x) >> HALF_BITS)
|
||||
#define LHALF(x) ((x) & ((1 << HALF_BITS) - 1))
|
||||
#define LHUP(x) ((x) << HALF_BITS)
|
||||
|
||||
extern u_quad_t __qdivrem __P((u_quad_t u, u_quad_t v, u_quad_t *rem));
|
||||
|
||||
/*
|
||||
* XXX
|
||||
* Compensate for gcc 1 vs gcc 2. Gcc 1 defines ?sh?di3's second argument
|
||||
* as u_quad_t, while gcc 2 correctly uses int. Unfortunately, we still use
|
||||
* both compilers.
|
||||
*/
|
||||
#if __GNUC__ >= 2
|
||||
typedef unsigned int qshift_t;
|
||||
#else
|
||||
typedef u_quad_t qshift_t;
|
||||
#endif
|
60
lib/libc/quad/subdi3.c
Normal file
60
lib/libc/quad/subdi3.c
Normal file
@ -0,0 +1,60 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)subdi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: subdi3.c,v 1.1 1993/09/16 06:06:09 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Subtract two quad values. This is trivial since a one-bit carry
|
||||
* from a single u_long difference x-y occurs if and only if (x-y) > x.
|
||||
*/
|
||||
quad_t
|
||||
__subdi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb, diff;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
diff.ul[L] = aa.ul[L] - bb.ul[L];
|
||||
diff.ul[H] = aa.ul[H] - bb.ul[H] - (diff.ul[L] > aa.ul[L]);
|
||||
return (diff.q);
|
||||
}
|
59
lib/libc/quad/ucmpdi2.c
Normal file
59
lib/libc/quad/ucmpdi2.c
Normal file
@ -0,0 +1,59 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)ucmpdi2.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: ucmpdi2.c,v 1.1 1993/09/16 06:06:10 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Return 0, 1, or 2 as a <, =, > b respectively.
|
||||
* Neither a nor b are considered signed.
|
||||
*/
|
||||
int
|
||||
__ucmpdi2(a, b)
|
||||
u_quad_t a, b;
|
||||
{
|
||||
union uu aa, bb;
|
||||
|
||||
aa.uq = a;
|
||||
bb.uq = b;
|
||||
return (aa.ul[H] < bb.ul[H] ? 0 : aa.ul[H] > bb.ul[H] ? 2 :
|
||||
aa.ul[L] < bb.ul[L] ? 0 : aa.ul[L] > bb.ul[L] ? 2 : 1);
|
||||
}
|
54
lib/libc/quad/udivdi3.c
Normal file
54
lib/libc/quad/udivdi3.c
Normal file
@ -0,0 +1,54 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)udivdi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: udivdi3.c,v 1.1 1993/09/16 06:06:11 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Divide two unsigned quads.
|
||||
*/
|
||||
u_quad_t
|
||||
__udivdi3(a, b)
|
||||
u_quad_t a, b;
|
||||
{
|
||||
|
||||
return (__qdivrem(a, b, (u_quad_t *)0));
|
||||
}
|
56
lib/libc/quad/umoddi3.c
Normal file
56
lib/libc/quad/umoddi3.c
Normal file
@ -0,0 +1,56 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)umoddi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: umoddi3.c,v 1.1 1993/09/16 06:06:12 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Return remainder after dividing two unsigned quads.
|
||||
*/
|
||||
u_quad_t
|
||||
__umoddi3(a, b)
|
||||
u_quad_t a, b;
|
||||
{
|
||||
u_quad_t r;
|
||||
|
||||
(void)__qdivrem(a, b, &r);
|
||||
return (r);
|
||||
}
|
59
lib/libc/quad/xordi3.c
Normal file
59
lib/libc/quad/xordi3.c
Normal file
@ -0,0 +1,59 @@
|
||||
/*-
|
||||
* Copyright (c) 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This software was developed by the Computer Systems Engineering group
|
||||
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
||||
* contributed to Berkeley.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#if defined(LIBC_SCCS) && !defined(lint)
|
||||
/*static char *sccsid = "from: @(#)xordi3.c 8.1 (Berkeley) 6/4/93";*/
|
||||
static char *rcsid = "$Id: xordi3.c,v 1.1 1993/09/16 06:06:13 mycroft Exp $";
|
||||
#endif /* LIBC_SCCS and not lint */
|
||||
|
||||
#include "quad.h"
|
||||
|
||||
/*
|
||||
* Return a ^ b, in quad.
|
||||
*/
|
||||
quad_t
|
||||
__xordi3(a, b)
|
||||
quad_t a, b;
|
||||
{
|
||||
union uu aa, bb;
|
||||
|
||||
aa.q = a;
|
||||
bb.q = b;
|
||||
aa.ul[0] ^= bb.ul[0];
|
||||
aa.ul[1] ^= bb.ul[1];
|
||||
return (aa.q);
|
||||
}
|
Loading…
Reference in New Issue
Block a user